body{overscroll-behavior-y:none;-webkit-tap-highlight-color:transparent;padding-top:env(safe-area-inset-top);padding-bottom:env(safe-area-inset-bottom);background:#000}html{background:#000}body.fullscreen-mode header,body.fullscreen-mode .app-header{display:none!important}body.fullscreen-mode .content-area{padding-top:0!important;height:100vh;overflow:hidden!important;background:#000}body.fullscreen-mode{padding-top:0!important;padding-bottom:0!important;background:#000;color:#f9fafb}html.fullscreen-mode{background:#000}body.fullscreen-mode .app-container{height:100vh;background:#000}body.fullscreen-mode #guitar-view{height:100vh;padding-top:0;background:#000}body.fullscreen-mode .content-area>:not(#guitar-view){display:none!important}body.fullscreen-mode .guitar-scroll-container{flex:1;overflow-y:hidden;touch-action:pan-x}body.fullscreen-mode .guitar-chord-anchor #guitar-chord-name{display:block!important}body.fullscreen-mode #guitar-view .guitar-tip{display:none}body.fullscreen-mode .bottom-tabbar{display:none!important}body.fullscreen-mode{padding-top:0;padding-bottom:0}.selected-note{color:#f97316!important;transform:scale(1.1);font-weight:800!important;text-shadow:0 0 15px rgba(249,115,22,.2)}.note-name{transition:all .2s cubic-bezier(.34,1.56,.64,1)}.view-hidden{display:none!important}body,div,span,button,input{transition-property:color,background-color,border-color,text-decoration-color,fill,stroke,opacity,transform,margin,padding,max-height,box-shadow;transition-timing-function:cubic-bezier(.4,0,.2,1);transition-duration:.2s}.click-flash{outline:none!important;transition:transform .1s ease,opacity .2s ease}.click-flash:active{transform:scale(.92);opacity:.7}.font-tech-title{font-family:Chakra Petch,sans-serif}@keyframes noteFadeIn{0%{opacity:0;transform:translateY(2px)}to{opacity:1;transform:translateY(0)}}.note-item{display:inline-block;animation:noteFadeIn .2s ease-out forwards;margin:0 1px}.modal-name-wrapper{height:0;opacity:0;overflow:hidden!important;transition:all .3s cubic-bezier(.34,1.56,.64,1);transform:translateY(-5px);display:flex;align-items:center;justify-content:center}.chord-card-active .modal-name-wrapper{height:44px;opacity:1;margin-top:8px;margin-bottom:8px;transform:translateY(0)}.chord-card-active .root-display,.chord-card-active .sec-root-display{color:#f97316!important;transform:scale(1.05)}.content-area{padding-bottom:190px;scrollbar-width:none}.content-area::-webkit-scrollbar{display:none}.lang-btn.active{background-color:#fff;color:#18181b;box-shadow:0 1px 2px #0000000d}.dark .lang-btn.active{background-color:#27272a;color:#fff}.chord-card-inner{display:flex;width:200%;height:100%;transform:translate(-50%);transition:transform .4s cubic-bezier(.2,.8,.2,1)}.chord-card-face{width:50%;flex-shrink:0;display:flex;flex-direction:column;align-items:flex-start;justify-content:flex-start;position:relative;text-align:left;height:100%}.is-secondary .chord-card-inner{transform:translate(0)}.secondary-face{background:transparent;transition:background-color .35s ease}.dark .secondary-face{background:transparent}.group.is-secondary .secondary-face,.dark .group.is-secondary .secondary-face{background:#1a1a1f!important}.scale-degree.is-secondary{border-color:#a1a1aa!important;box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f}.dark .scale-degree.is-secondary{border-color:#52525b!important;box-shadow:none}.scale-degree{aspect-ratio:1 / 1;height:auto;background-color:#1a1a1f!important;transition:background-color .35s ease}.scale-degree.chord-card-active{aspect-ratio:auto}.scale-degree.is-secondary{background-color:#1a1a1f!important}.chord-card-face{background-color:#1a1a1f;transition:background-color .35s ease}.secondary-face{background-color:#24242a}.group.chord-card-active{z-index:10;height:auto!important}.edge-trigger{position:absolute;top:0;bottom:0;width:32px;display:flex;align-items:center;justify-content:center;z-index:20;opacity:0;transition:opacity .2s;color:#a1a1aa;cursor:pointer}.edge-left{color:#f97316}.app-header{position:fixed;top:0;left:0;right:0;z-index:50;background:#000;padding-top:env(safe-area-inset-top);transform:translateZ(0)}.app-header-inner{height:56px;display:flex;align-items:center;justify-content:center;position:relative;padding:0 20px}.app-header-left,.app-header-right{position:absolute;top:0;height:56px;display:flex;align-items:center}.app-header-left{left:20px}.app-header-right{right:20px}.help-modal{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000008c;display:flex;align-items:center;justify-content:center;z-index:80}.help-card{position:relative;width:min(86vw,420px);background:#1a1a1f;border:1px solid #2A2A2F;border-radius:20px;padding:18px 18px 16px;box-shadow:0 12px 32px #00000073}.help-welcome{color:#f97316;font-weight:700;margin-bottom:6px}.help-term{color:#f97316;font-weight:600;background:transparent;border:none;padding:0;margin:0;cursor:pointer}.help-term:focus{outline:none}.help-tooltip{position:absolute;z-index:90;max-width:260px;background:#111114eb;border:1px solid #2A2A2F;color:#e5e7eb;padding:8px 10px;border-radius:10px;font-size:12px;line-height:1.4;box-shadow:0 8px 20px #0006;opacity:0;transform:translate(-50%) translateY(-6px) scale(.98);transition:opacity .18s ease,transform .18s ease}.help-tooltip.show{opacity:1;transform:translate(-50%) translateY(0) scale(1)}.help-tooltip.hidden{display:none}.app-header-title{font-size:16px;font-weight:600;color:#fff;line-height:1;white-space:nowrap;text-align:center}.bottom-tabbar{position:fixed;left:0;right:0;bottom:0;height:104px;background:#000;display:flex;align-items:center;justify-content:space-around;padding-top:8px;padding-bottom:calc(12px + env(safe-area-inset-bottom));z-index:60;border-top:none;box-shadow:none}.tab-item{display:flex;flex-direction:column;align-items:center;gap:4px;font-size:10px;font-weight:600;color:#f97316;filter:grayscale(1) brightness(.55);transition:filter .15s ease;padding:8px 12px;min-width:64px;min-height:56px;border-radius:14px}.tab-item i{width:20px;height:20px}.tab-icon{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:none}.tab-item svg{width:20px;height:20px;stroke:currentColor;transition:none}.tab-item.active{filter:none}.interval-layout{min-height:calc(100vh - 160px);padding-top:64px;padding-bottom:64px;display:flex;flex-direction:column;align-items:center;justify-content:space-between}#interval-view{padding-top:0}.interval-result{height:120px;margin-bottom:0}#actual-interval-display{font-size:84px;font-weight:800;color:#f8fafc}.note-name{background:transparent;border:none;font-size:30px;font-weight:600;color:#6b7280;padding:0 6px;cursor:pointer}.note-display{margin:0}:root{--interval-title-top: 101px;--interval-notes-top: 266px;--interval-controls-top: 408px}.interval-layout{position:relative;min-height:calc(100vh - 160px)}.interval-layout .interval-result{position:absolute;top:var(--interval-title-top);left:0;right:0}.interval-layout .note-display{position:absolute;top:var(--interval-notes-top);left:0;right:0}.interval-layout .test-controls{position:absolute;top:var(--interval-controls-top);left:0;right:0;margin:0 auto}.interval-layout #test-question-area{position:absolute;top:var(--interval-title-top);left:0;right:0}.interval-layout #feedback-message{position:absolute;top:var(--interval-notes-top);left:0;right:0}.test-controls{border-top:none;margin-top:0;padding-top:0;width:340px;justify-content:space-between}.no-accent:hover,.no-accent:active{background-color:inherit!important;color:inherit!important}#test-question-area{margin-top:0;margin-bottom:0}#upgrade-btn{color:#9ca3af!important}@media(hover:hover){.group:hover .edge-trigger{opacity:.3}.edge-trigger:hover{opacity:.8!important}}@media(hover:none){.edge-trigger{display:none!important}}.edge-right{right:0}.edge-left{left:0}#current-key-display{transition:all .4s cubic-bezier(.34,1.56,.64,1);max-height:24px;opacity:1;margin-top:.25rem;transform:scale(1)}#current-key-display.hidden-key{opacity:0;max-height:0;margin-top:0;transform:scale(.8);pointer-events:none}.chord-settings{background-color:#1a1a1f;border:none;box-shadow:none;position:relative;z-index:10;pointer-events:auto;touch-action:manipulation}.chord-type-btn{color:#9ca3af;pointer-events:auto;position:relative;z-index:5;touch-action:manipulation}.chord-type-btn.active-degree{background-color:#f8fafc;color:#111827;box-shadow:none}.mode-scroll-container{display:flex;overflow-x:auto;gap:1rem;scrollbar-width:none;-ms-overflow-style:none;padding:.25rem 0;justify-content:flex-start}.mode-scroll-container::-webkit-scrollbar{display:none}.guitar-scroll-container{scrollbar-width:none;-ms-overflow-style:none;cursor:grab}.guitar-scroll-container:active{cursor:grabbing}.guitar-scroll-container::-webkit-scrollbar{display:none}.fret-cell{position:relative;display:flex;align-items:center;justify-content:center;border-right:2px solid #2b2b2b;flex-shrink:0;height:100%;cursor:pointer;-webkit-tap-highlight-color:transparent}.dark .fret-cell{border-right-color:#2b2b2b}.fret-0{border-right-width:6px;background-color:#1a1a1f;border-right-color:#3a3a3a}.guitar-string{position:absolute;left:0;right:0;top:50%;transform:translateY(-50%);background-color:#4b4b4b;z-index:0;pointer-events:none;box-shadow:0 1px 2px #0003}.dark .guitar-string{background-color:#4b4b4b}.str-0{height:1px}.str-1{height:1.5px}.str-2{height:2px}.str-3{height:3px}.str-4{height:4px}.str-5{height:5px}.guitar-note-marker{width:28px;height:28px;border-radius:50%;font-size:11px;font-weight:800;display:flex;align-items:center;justify-content:center;z-index:10;box-shadow:0 2px 4px #0003;animation:popIn .15s cubic-bezier(.175,.885,.32,1.275);-webkit-user-select:none;user-select:none}.marker-root{background-color:#f97316;color:#fff;box-shadow:0 2px 4px #f9731666}.marker-tone{background-color:#fff;color:#f97316;border:2px solid #f97316}.dark .marker-tone{background-color:#18181b}.marker-gray{background-color:#a1a1aa;color:#fff}.dark .marker-gray{background-color:#52525b}@keyframes popIn{0%{transform:scale(0);opacity:0}to{transform:scale(1);opacity:1}}@keyframes vibrate{0%,to{transform:translateY(-50%)}25%{transform:translateY(calc(-50% - 1px))}75%{transform:translateY(calc(-50% + 1px))}}.string-vibrating{animation:vibrate .05s linear 12}.fret-number{font-size:10px;color:#6b6b6b;font-weight:600;margin-top:4px}.guitar-chord-anchor{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:12rem;text-align:center;pointer-events:none}@media(max-width:820px){.guitar-chord-anchor{left:84px;right:84px;transform:translateY(-50%);width:auto;text-align:center}.guitar-chord-anchor #guitar-chord-name{display:none}}.scan-dropzone{border:1.5px dashed #d4d4d8;background:linear-gradient(180deg,#f973160f,#fff0)}.dark .scan-dropzone{border-color:#3f3f46;background:linear-gradient(180deg,#f973161f,#18181b00)}.scan-preview-image{width:100%;height:auto;object-fit:contain;border-radius:16px}.dark .scan-preview-image{background:#18181b}.scan-top-flat,.scan-result-flat{border:none!important;background:transparent!important;padding:0!important;box-shadow:none!important}.local-score-card:active{border-color:#2a2a2f}.local-score-flash{border-color:#f97316!important;border-width:1px!important;box-shadow:none!important}.score-measure{touch-action:manipulation;transition:border-color .22s ease,box-shadow .22s ease;border:1px solid #2a2a2f;border-radius:20px;background:#0f0f14}.score-measure *{touch-action:manipulation}.dark .score-measure{border-color:#2a2a2f;background:#0f0f14}.scan-electronic-flat{padding:0}.score-measure.active{border-color:#f97316}.card-flash{border-color:#f97316!important;box-shadow:0 0 0 1px #f973168c}.scan-action-btn{width:30px;height:30px;border-radius:9999px;border:1px solid #2a2a2f;background:#0f0f14;color:#a1a1aa;display:inline-flex;align-items:center;justify-content:center;transition:border-color .22s ease,box-shadow .22s ease,color .22s ease,background-color .22s ease}.scan-action-btn svg{stroke:currentColor;fill:none}.scan-action-icon{width:14px;height:14px}.scan-action-btn.active{border-color:#f97316;color:#f97316}.scan-action-btn.active svg{stroke:#f97316;fill:none}.scan-action-btn.flash{border-color:#f97316;color:#f97316;box-shadow:0 0 0 1px #f973168c}.scan-action-btn.flash svg{stroke:#f97316;fill:none}.scan-action-btn.disabled{opacity:.6;cursor:not-allowed;pointer-events:auto}.score-chord{transition:border-color .22s ease,box-shadow .22s ease;border:1px solid #2a2a2f;background:#1a1a1f;color:#e5e7eb;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;gap:6px;padding:10px 12px;min-width:78px}.score-chord-row{grid-template-columns:repeat(4,minmax(78px,1fr))}.score-measure .score-chord{gap:3px;padding:6px 10px;min-width:78px}.dark .score-chord{background:#1a1a1f;border-color:#2a2a2f}.score-chord.active{color:#ea580c;text-decoration:underline;text-underline-offset:4px}.score-chord-card{touch-action:manipulation;border-radius:14px!important;flex:1 1 calc(25% - 6px);max-width:calc(25% - 6px);width:100%;align-self:end;transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease}.score-chord-card *{touch-action:manipulation}.score-chord-card:not(.expanded-mini):not(.expanded-full){justify-content:center}.score-chord-card:not(.expanded-mini):not(.expanded-full) .score-chord-label{margin-top:0;transform:translateY(-2px)}.score-chord-card .score-chord-diagram,.score-chord-card .score-chord-scale{max-height:0;opacity:0;transform:translateY(4px);overflow:hidden!important;transition:max-height .22s ease,opacity .22s ease,transform .22s ease}.score-chord-card.expanded-mini .score-chord-diagram{max-height:90px;opacity:1;transform:translateY(0);width:62px;height:62px}.score-chord-card.expanded-full .score-chord-diagram,.score-chord-card.expanded-full .score-scale-name{margin-bottom:0}.score-chord-card.expanded-full .score-chord-scale{max-height:140px;opacity:1;transform:translateY(0)}.score-chord-card.expanded-full{gap:2px}.score-chord-card.expanded-full .score-chord-diagram{width:62px;height:62px}.score-chord-card.expanded-full .score-scale-name{margin-top:-4px}.score-chord-card.expanded-full .score-chord-scale{margin-top:0}.score-chord-card.expanded-full .score-chord-label{margin-top:10px}.score-chord-card.fast-toggle .score-chord-diagram,.score-chord-card.fast-toggle .score-chord-scale{transition-duration:.14s}.score-chord-diagram{width:52px;height:52px}.score-chord-diagram .chord-diagram{width:100%!important;height:100%!important}.score-chord-card .chord-diagram{background:transparent!important;border:none!important;box-shadow:none!important;padding:0!important;border-radius:0!important}.score-chord-card .chord-diagram-index{display:none!important}.score-chord-label{font-weight:700;font-size:14px;line-height:1.1;text-align:center;white-space:nowrap;overflow:hidden!important;text-overflow:ellipsis;max-width:100%;width:100%}.score-chord-func{font-size:.7em;color:#9ca3af;font-weight:600;margin-left:2px}.score-measure .score-chord-label{font-size:10px}.score-measure .score-chord-scale{font-size:8px}.score-chord-scale{text-align:center;font-size:11px;color:#a1a1aa}.score-scale-name{white-space:nowrap;overflow:hidden!important;text-overflow:ellipsis;max-width:100%}.score-scale-notes{display:flex;flex-direction:column;align-items:center;gap:4px;margin-top:4px}.score-scale-row{display:flex;align-items:center;justify-content:center;gap:5px}.score-scale-row span{font-size:7.5px;line-height:1.05}.score-section-flow{margin-top:4px;font-size:11px;color:#9ca3af}.score-section-detail{max-height:0;opacity:0;overflow:hidden!important;color:#9ca3af;transform:translateY(-4px);transition:max-height .24s ease,opacity .2s ease,transform .2s ease,margin-top .2s ease;margin-top:0}.score-section-detail.open{max-height:240px;opacity:1;transform:translateY(0);margin-top:12px}.score-inline-detail{max-height:0;overflow:hidden!important;opacity:0;transform:translateY(-6px);transition:max-height .28s ease,opacity .22s ease,transform .22s ease,margin-top .22s ease}.score-inline-detail.open{max-height:520px;opacity:1;transform:translateY(0);margin-top:14px}.score-inline-detail .detail-block{background:#0f0f14;border:1px solid #2a2a2f}.dark .score-inline-detail .detail-block{background:#0f0f14;border-color:#2a2a2f}.tone-chord{color:#ea580c;font-weight:700}.tone-ext{color:#e5e7eb;font-weight:600}.dark .tone-ext{color:#e5e7eb}.tone-avoid{color:#71717a;text-decoration:line-through}.chord-diagram{width:110px;height:130px;background:#0f0f14;border:1px solid #2a2a2f;border-radius:10px;padding:8px;position:relative;display:flex;align-items:center;justify-content:center;pointer-events:auto;z-index:12;transition:border-color .25s ease,box-shadow .25s ease}.chord-diagram *{pointer-events:auto}.chord-diagram-swipe{position:absolute;top:0;right:0;bottom:0;left:0;z-index:7;background:transparent;touch-action:none}.chord-diagram-nav{position:absolute;left:50%;transform:translate(-50%);width:18px;height:18px;border-radius:999px;border:1px solid #2a2a2f;background:#0f0f14e6;color:#9ca3af;font-size:12px;line-height:16px;display:flex;align-items:center;justify-content:center;z-index:6;opacity:.9;transition:opacity .25s ease;pointer-events:auto}.chord-diagram-nav.up{top:4px}.chord-diagram-nav.down{bottom:4px}.chord-diagram-nav.fade{opacity:0;pointer-events:none}.chord-diagram-index{position:absolute;right:6px;bottom:6px;font-size:10px;color:#6b7280;background:#08080c99;padding:1px 4px;border-radius:6px;z-index:6;letter-spacing:.02em;opacity:0;transition:opacity .2s ease}.chord-diagram.show-index .chord-diagram-index{opacity:1}.chord-diagram.flash{border-color:#f97316;box-shadow:0 0 0 1px #f9731666}.chord-degree-overlay{position:absolute;top:0;left:0;right:0;bottom:0;z-index:30;pointer-events:auto;background:transparent;border-radius:999px}.chord-degree-zone{position:absolute;top:0;bottom:0;width:50%}.chord-degree-zone.left{left:0}.chord-degree-zone.right{right:0}.chord-diagram-toast{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);font-size:12px;color:#f97316;background:#08080cd9;padding:3px 8px;border-radius:10px;border:1px solid #2a2a2f;z-index:8;pointer-events:none}.chord-diagram svg{width:100%;height:100%}.chord-diagram .fret-label{position:absolute;top:6px;left:6px;font-size:10px;color:#9ca3af}.chord-diagram-inline{width:78px;height:98px;background:#0f0f14;border-color:#22242b;display:none;position:absolute;top:14px;right:14px;z-index:2;pointer-events:auto}.scale-degree.chord-card-active .chord-diagram-inline{display:flex!important}.chord-name{transform:translateY(-2px)}.chord-diagram-label{position:absolute;top:118px;right:14px;width:78px;text-align:center;font-size:10px;font-weight:600;color:#9ca3af;display:none}.scale-degree.chord-card-active .chord-diagram-label{display:block}.dark .tone-avoid{color:#a1a1aa}html.native header{display:none!important}html.native .content-area{padding-top:0!important}html.native #home-view{display:none!important}html.native,html.native body,html.native .content-area{-ms-overflow-style:none;scrollbar-width:none}html.native ::-webkit-scrollbar{display:none}.content-area.no-scroll{overflow:hidden!important;overscroll-behavior:none;touch-action:none}#help-title{display:none}